Causes of yellowing of the leaves of Allamanda citriodora and its treatment

For most of the meat, are more like dry, usually grow to dry rather than wet. Watering frequency is affected by many factors, seasonal changes will affect watering, watering every 5-7 days in spring and autumn, every 1-2 days in summer, every half month in winter. Different growth periods will also affect, seedling stage once a week, old pile stage once or twice a month. Succulent plants are more afraid of water accumulation, and should be treated in time after water accumulation occurs.

1. Too much light

1. Reason: If the yellow cicada is exposed to the hot sun all the time in the summer when the sunlight is strong and the illumination time is too long, it may cause the problem of yellow burning of the leaves, which is manifested by obvious yellow spots on the leaves and serious yellowing of the leaves toward the light surface.

2. Treatment method: If it is a potted plant, immediately move it to a shady place, spray water to reduce temperature and reduce direct sunlight, and it can be restored after a period of time.If planted outdoors, immediately do a good job of shading measures, such as shading nets and other measures, can give it proper ventilation and cooling, which is conducive to leaf recovery.

2. Diseases and insect pests

1. Reason: If the yellow cicada may have the disease of yellow cicada red wax scale, it will affect its growth and development, resulting in malnutrition of yellow cicadas plants, gradual weakening of physiological metabolism, and the leaves will slowly turn yellow.

2. Treatment method: If diseases and insect pests have occurred, immediately cut off the damaged and yellowed leaves, and spray with appropriate insecticides.When the situation improves, we should also use pesticides to prevent pests and diseases on time and appropriately.

3. The temperature is too low

1. Reason: The yellow cicada is a kind of thermophilic plant. Too low temperature will make its leaves yellow or even deciduous.

2. Treatment method: The yellow leaves caused by too low ambient temperature need to be treated with heat preservation. It is best to place them in an environment with a temperature of more than 22 and wait for improvement.If the ambient temperature is at least 10 degrees Celsius in winter, do not spend the winter outdoors, it will frostbite.

4. Too Much Watering

1. Reason: Too much watering will cause its roots to be soaked in water, the respiratory function will be limited, and the problem of nutrition supply will lead to the appearance of yellow leaves.

2. Treatment method: Empty the lower part and dry it with water. If the yellow leaves are serious, remove the pot and dry the pot soil in a ventilated place.After improvement, watering follows the principle of irrigation, especially in winter, less watering is needed, and a large amount of watering can not be blindly carried out.